opiate

(redirected from endogenous opiate)
Also found in: Dictionary, Thesaurus, Medical, Legal.
Related to endogenous opiate: endogenous opioid

opiate

1. any of various narcotic drugs, such as morphine and heroin, that act on opioid receptors
2. any other narcotic or sedative drug
3. containing or consisting of opium

opiate

[′ō·pē·ət]
(pharmacology)
A sleep-inducing drug.
Any narcotic.
An opium preparation.
Any tranquilizing agent.
References in periodicals archive ?
It has been reported that the endogenous opiates released during running may cause smaller pupils, i.
As was noted earlier in this paper, exposure to a series of inescapable shocks has been found to produce deficits in a variety of learning tasks, alterations in the levels of numerous neurotransmitters, and an activation of endogenous opiates and immunosuppression (see Peterson, Maier, & Seligman, 1993, for a review of this literature).
A primary way that pain modulation occurs is through the endogenous opiate system, first described in 1975 by Hughes and associates.